bester-ytm v1.3.0

Added

• A claude AI provider for people without codex: playlist briefs, similar
  tracks, and radio station lookups can shell out to the Claude Code CLI
  (claude -p), riding your existing claude login with no API key. The
  auto provider now falls back codex → claude → heuristic.
• AI-assisted radio station adding: type add radio station <name> into the
  playlist builder and the configured AI provider looks up the station's
  direct stream URL; bester-ytm verifies the URL serves audio and writes it
  to [radio.stations] in config.toml, so the station appears under
  radio:. The heuristic provider explains how to add a station manually
  instead.

Fixed

• Config rewrites quote TOML keys that need it, so stations named with
  spaces ("Groove Salad") no longer corrupt config.toml.